/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/03-practical_15-exit_problems.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 06:55:40,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 06:55:40,277 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 06:55:40,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 06:55:40,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 06:55:40,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 06:55:40,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 06:55:40,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 06:55:40,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 06:55:40,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 06:55:40,324 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 06:55:40,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 06:55:40,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 06:55:40,326 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 06:55:40,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 06:55:40,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 06:55:40,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 06:55:40,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 06:55:40,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 06:55:40,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 06:55:40,328 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 06:55:40,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 06:55:40,329 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 06:55:40,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 06:55:40,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 06:55:40,330 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 06:55:40,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 06:55:40,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:55:40,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 06:55:40,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 06:55:40,331 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 06:55:40,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 06:55:40,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 06:55:40,332 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 06:55:40,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 06:55:40,333 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 06:55:40,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 06:55:40,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 06:55:40,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 06:55:40,654 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 06:55:40,654 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 06:55:40,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/03-practical_15-exit_problems.i [2023-08-26 06:55:41,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 06:55:42,136 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 06:55:42,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/03-practical_15-exit_problems.i [2023-08-26 06:55:42,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdda7579b/72e4e5a5d925476b8a147b81fcb4ee70/FLAGbdeb24769 [2023-08-26 06:55:42,180 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdda7579b/72e4e5a5d925476b8a147b81fcb4ee70 [2023-08-26 06:55:42,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 06:55:42,184 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 06:55:42,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 06:55:42,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 06:55:42,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 06:55:42,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a597e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42, skipping insertion in model container [2023-08-26 06:55:42,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,225 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 06:55:42,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:55:42,639 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 06:55:42,656 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 06:55:42,658 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 06:55:42,665 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 06:55:42,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:55:42,736 INFO L206 MainTranslator]: Completed translation [2023-08-26 06:55:42,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42 WrapperNode [2023-08-26 06:55:42,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 06:55:42,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 06:55:42,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 06:55:42,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 06:55:42,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,794 INFO L138 Inliner]: procedures = 264, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2023-08-26 06:55:42,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 06:55:42,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 06:55:42,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 06:55:42,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 06:55:42,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 06:55:42,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 06:55:42,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 06:55:42,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 06:55:42,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (1/1) ... [2023-08-26 06:55:42,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:55:42,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:55:42,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 06:55:42,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 06:55:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 06:55:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 06:55:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 06:55:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 06:55:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 06:55:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 06:55:42,899 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 06:55:42,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 06:55:42,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 06:55:42,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 06:55:42,901 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 06:55:43,049 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 06:55:43,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 06:55:43,229 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 06:55:43,237 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 06:55:43,237 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-26 06:55:43,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:55:43 BoogieIcfgContainer [2023-08-26 06:55:43,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 06:55:43,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 06:55:43,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 06:55:43,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 06:55:43,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:55:42" (1/3) ... [2023-08-26 06:55:43,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cfe0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:55:43, skipping insertion in model container [2023-08-26 06:55:43,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:42" (2/3) ... [2023-08-26 06:55:43,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cfe0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:55:43, skipping insertion in model container [2023-08-26 06:55:43,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:55:43" (3/3) ... [2023-08-26 06:55:43,247 INFO L112 eAbstractionObserver]: Analyzing ICFG 03-practical_15-exit_problems.i [2023-08-26 06:55:43,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 06:55:43,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 06:55:43,262 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 06:55:43,341 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 06:55:43,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 161 flow [2023-08-26 06:55:43,407 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2023-08-26 06:55:43,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:55:43,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-26 06:55:43,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 161 flow [2023-08-26 06:55:43,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 77 transitions, 157 flow [2023-08-26 06:55:43,417 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:55:43,424 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 77 transitions, 157 flow [2023-08-26 06:55:43,427 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 77 transitions, 157 flow [2023-08-26 06:55:43,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 157 flow [2023-08-26 06:55:43,442 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2023-08-26 06:55:43,443 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:55:43,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-26 06:55:43,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 1190 [2023-08-26 06:55:45,216 INFO L134 LiptonReduction]: Checked pairs total: 3792 [2023-08-26 06:55:45,216 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-08-26 06:55:45,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 06:55:45,233 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e8e5c85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:55:45,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-26 06:55:45,236 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:55:45,237 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-26 06:55:45,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:55:45,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:45,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 06:55:45,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-26 06:55:45,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:45,242 INFO L85 PathProgramCache]: Analyzing trace with hash 251350154, now seen corresponding path program 1 times [2023-08-26 06:55:45,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:45,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004133234] [2023-08-26 06:55:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:45,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:55:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:55:45,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:55:45,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004133234] [2023-08-26 06:55:45,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004133234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:55:45,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:55:45,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:55:45,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347280378] [2023-08-26 06:55:45,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:55:45,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:55:45,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:55:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:55:45,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:55:45,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 129 [2023-08-26 06:55:45,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:55:45,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 129 [2023-08-26 06:55:45,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:55:45,527 INFO L124 PetriNetUnfolderBase]: 73/194 cut-off events. [2023-08-26 06:55:45,527 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:55:45,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 194 events. 73/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 809 event pairs, 34 based on Foata normal form. 13/176 useless extension candidates. Maximal degree in co-relation 360. Up to 102 conditions per place. [2023-08-26 06:55:45,530 INFO L140 encePairwiseOnDemand]: 119/129 looper letters, 28 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-08-26 06:55:45,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 37 transitions, 145 flow [2023-08-26 06:55:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:55:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:55:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-08-26 06:55:45,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607235142118863 [2023-08-26 06:55:45,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-08-26 06:55:45,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-08-26 06:55:45,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:55:45,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-08-26 06:55:45,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,553 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 57 flow. Second operand 3 states and 217 transitions. [2023-08-26 06:55:45,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 37 transitions, 145 flow [2023-08-26 06:55:45,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 37 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:55:45,557 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 98 flow [2023-08-26 06:55:45,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-08-26 06:55:45,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-26 06:55:45,562 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 98 flow [2023-08-26 06:55:45,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:45,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:55:45,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 06:55:45,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-26 06:55:45,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:45,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1349337992, now seen corresponding path program 1 times [2023-08-26 06:55:45,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:45,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908070537] [2023-08-26 06:55:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:45,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:55:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:55:45,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:55:45,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908070537] [2023-08-26 06:55:45,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908070537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:55:45,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:55:45,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:55:45,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263247919] [2023-08-26 06:55:45,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:55:45,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:55:45,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:55:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:55:45,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:55:45,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 129 [2023-08-26 06:55:45,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:55:45,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 129 [2023-08-26 06:55:45,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:55:45,697 INFO L124 PetriNetUnfolderBase]: 74/196 cut-off events. [2023-08-26 06:55:45,698 INFO L125 PetriNetUnfolderBase]: For 90/92 co-relation queries the response was YES. [2023-08-26 06:55:45,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 196 events. 74/196 cut-off events. For 90/92 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 805 event pairs, 37 based on Foata normal form. 2/177 useless extension candidates. Maximal degree in co-relation 473. Up to 136 conditions per place. [2023-08-26 06:55:45,700 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 29 selfloop transitions, 7 changer transitions 1/40 dead transitions. [2023-08-26 06:55:45,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 214 flow [2023-08-26 06:55:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:55:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:55:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-08-26 06:55:45,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193798449612403 [2023-08-26 06:55:45,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-08-26 06:55:45,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-08-26 06:55:45,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:55:45,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-08-26 06:55:45,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,705 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 98 flow. Second operand 3 states and 201 transitions. [2023-08-26 06:55:45,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 214 flow [2023-08-26 06:55:45,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:55:45,707 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 142 flow [2023-08-26 06:55:45,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-08-26 06:55:45,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-26 06:55:45,708 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 142 flow [2023-08-26 06:55:45,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:45,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:55:45,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 06:55:45,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-26 06:55:45,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:45,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1741096750, now seen corresponding path program 1 times [2023-08-26 06:55:45,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:45,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249274250] [2023-08-26 06:55:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:45,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:55:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:55:45,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:55:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249274250] [2023-08-26 06:55:45,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249274250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:55:45,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:55:45,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:55:45,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567903252] [2023-08-26 06:55:45,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:55:45,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:55:45,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:55:45,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:55:45,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:55:45,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 129 [2023-08-26 06:55:45,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:55:45,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 129 [2023-08-26 06:55:45,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:55:45,853 INFO L124 PetriNetUnfolderBase]: 67/193 cut-off events. [2023-08-26 06:55:45,853 INFO L125 PetriNetUnfolderBase]: For 129/141 co-relation queries the response was YES. [2023-08-26 06:55:45,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 193 events. 67/193 cut-off events. For 129/141 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 789 event pairs, 33 based on Foata normal form. 2/183 useless extension candidates. Maximal degree in co-relation 529. Up to 116 conditions per place. [2023-08-26 06:55:45,855 INFO L140 encePairwiseOnDemand]: 124/129 looper letters, 26 selfloop transitions, 6 changer transitions 9/44 dead transitions. [2023-08-26 06:55:45,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 270 flow [2023-08-26 06:55:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:55:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:55:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2023-08-26 06:55:45,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5090439276485789 [2023-08-26 06:55:45,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2023-08-26 06:55:45,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2023-08-26 06:55:45,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:55:45,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2023-08-26 06:55:45,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,860 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 142 flow. Second operand 3 states and 197 transitions. [2023-08-26 06:55:45,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 270 flow [2023-08-26 06:55:45,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:55:45,863 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 156 flow [2023-08-26 06:55:45,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2023-08-26 06:55:45,864 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-26 06:55:45,864 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 156 flow [2023-08-26 06:55:45,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:55:45,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:45,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:55:45,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 06:55:45,865 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-26 06:55:45,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1792223474, now seen corresponding path program 1 times [2023-08-26 06:55:45,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:45,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123906483] [2023-08-26 06:55:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:45,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 06:55:45,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 06:55:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 06:55:45,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 06:55:45,909 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 06:55:45,909 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 8 remaining) [2023-08-26 06:55:45,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-08-26 06:55:45,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-08-26 06:55:45,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2023-08-26 06:55:45,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-08-26 06:55:45,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-08-26 06:55:45,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-08-26 06:55:45,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-08-26 06:55:45,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 06:55:45,912 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 06:55:45,917 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 06:55:45,917 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 06:55:45,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:55:45 BasicIcfg [2023-08-26 06:55:45,938 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 06:55:45,939 INFO L158 Benchmark]: Toolchain (without parser) took 3754.90ms. Allocated memory was 367.0MB in the beginning and 471.9MB in the end (delta: 104.9MB). Free memory was 342.0MB in the beginning and 420.1MB in the end (delta: -78.1MB). Peak memory consumption was 27.2MB. Max. memory is 16.0GB. [2023-08-26 06:55:45,939 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 367.0MB. Free memory is still 343.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 06:55:45,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.56ms. Allocated memory is still 367.0MB. Free memory was 341.6MB in the beginning and 314.2MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 06:55:45,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.60ms. Allocated memory is still 367.0MB. Free memory was 314.2MB in the beginning and 311.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 06:55:45,940 INFO L158 Benchmark]: Boogie Preprocessor took 34.12ms. Allocated memory is still 367.0MB. Free memory was 311.8MB in the beginning and 310.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 06:55:45,941 INFO L158 Benchmark]: RCFGBuilder took 408.46ms. Allocated memory is still 367.0MB. Free memory was 310.6MB in the beginning and 297.4MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 06:55:45,941 INFO L158 Benchmark]: TraceAbstraction took 2697.48ms. Allocated memory was 367.0MB in the beginning and 471.9MB in the end (delta: 104.9MB). Free memory was 297.0MB in the beginning and 420.1MB in the end (delta: -123.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 06:55:45,944 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 367.0MB. Free memory is still 343.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 552.56ms. Allocated memory is still 367.0MB. Free memory was 341.6MB in the beginning and 314.2MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.60ms. Allocated memory is still 367.0MB. Free memory was 314.2MB in the beginning and 311.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.12ms. Allocated memory is still 367.0MB. Free memory was 311.8MB in the beginning and 310.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 408.46ms. Allocated memory is still 367.0MB. Free memory was 310.6MB in the beginning and 297.4MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2697.48ms. Allocated memory was 367.0MB in the beginning and 471.9MB in the end (delta: 104.9MB). Free memory was 297.0MB in the beginning and 420.1MB in the end (delta: -123.2MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 79 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 27 TransitionsAfterwards, 1190 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 51 TotalNumberOfCompositions, 3792 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1233, independent: 1006, independent conditional: 0, independent unconditional: 1006, dependent: 227, dependent conditional: 0, dependent unconditional: 227, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 583, independent: 543, independent conditional: 0, independent unconditional: 543, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1233, independent: 463, independent conditional: 0, independent unconditional: 463, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 583, unknown conditional: 0, unknown unconditional: 583] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 923]: Data race detected Data race detected The following path leads to a data race: [L918] 0 int glob; [L919] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L920] 0 pthread_mutex_t bad = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L934] 0 pthread_t id; [L935] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, bad={2:0}, glob=0, id={3:0}, mutex={1:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L936] COND TRUE 0 1 [L937] CALL 0 f(&bad) [L929] 1 glob++ VAL [arg={0:0}, arg={0:0}, bad={2:0}, glob++=0, glob=1, mutex={1:0}] [L923] 0 glob++ VAL [arg={0:0}, arg={0:0}, bad={2:0}, glob++=0, glob=1, m={2:0}, m={2:0}, mutex={1:0}] [L929] 1 glob++ VAL [arg={0:0}, arg={0:0}, bad={2:0}, glob++=0, glob++=25, glob=1, mutex={1:0}] [L923] 0 glob++ VAL [arg={0:0}, arg={0:0}, bad={2:0}, glob++=0, glob++=25, glob=1, m={2:0}, m={2:0}, mutex={1:0}] Now there is a data race on ~glob~0 between C: glob++ [929] and C: glob++ [923] - UnprovableResult [Line: 939]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 923]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 935]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 929]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 929]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 96 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 111 IncrementalHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 23 mSDtfsCounter, 111 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-26 06:55:45,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...